33results about How to "Solving sampling difficulties" patented technology

The invention discloses a land surveying sampling device convenient for storage for agricultural use. The land surveying sampling device convenient for storage for agricultural use includes a supportplate and a motor; a support frame is fixedly welded on the upper end of the support plate, and the upper end of the support frame is fixedly sleeved on the outer side of a sleeve; the upper end of the sleeve is fixedly welded to the lower end of a base plate, and the upper end of the base plate is fixedly and symmetrically equipped with four universal wheels; a screw rod is inserted at the lowerend of the sleeve, and a nut is sleeved on the screw rod; and the nut is rotatably installed at the lower end opening of the sleeve through a bearing. According to the invention, a first sampling plate and a second sampling plate are arranged to be combined into a sampling cylinder, and the first sampling plate and the second sampling plate can be separated, therefore, the sample is easy to be taken out; in addition, a vent hole is arranged, so that the soil enters the inside of the first sampling plate and the second sampling plate, and the air pressure inside the first sampling plate and thesecond sampling plate can be exhausted through the vent hole, therefore, sampling difficulties due to excessive air pressure inside the cylinder are prevented.

The invention relates to an automatic coal density testing system which comprises a sampler, a metering unit, a water replenishing unit and a discharge unit, wherein the sampler and the water replenishing unit are arranged beside the metering unit and are respectively used for feeding a coal sample and replenishing water into the metering unit; the discharge unit is arranged on one side of the metering unit and is used for discharging the coal sample and the water in the metering unit. Due to adoption of the sampler, the metering unit, the water replenishing unit and the discharge unit of theautomatic coal density testing system, automatic measurement on the density of the coal sample is achieved, problems that a conventional automatic coal density testing system is difficult in sampling,tedious in measurement, high in cost, large in labor and time consumption, low in measurement precision, and the like, are solved, a measurement system which is low in cost and convenient and precisein measurement is provided for large coal use companies such as heat-engine plants and heat supply companies, the companies can handle real-time density of fuel coal conveniently, and coal quality can be conveniently controlled and detected.

The invention provides a portable biopsy sampling gastroscope. The portable biopsy sampling gastroscope comprises a display mechanism and a gastroscope tube communicated with the display mechanism; amucus sampling mechanism is installed at the end, away from the display mechanism, of the gastroscope tube; the mucus sampling mechanism comprises a limiting cylinder, several sampling pieces and a driving assembly; the several sampling pieces are arranged in the circumferential direction of the limiting cylinder and used for sticking mucus; the driving assembly is used for driving the sampling pieces to move in the radial direction towards or away from the axis of the limiting cylinder; and each sampling piece comprises a sampling plate and several sampling bristles distributed on the sampling plate in an array mode. According to the portable biopsy sampling gastroscope disclosed by the invention, the problems that an existing biopsy sampling device for the digestive system department islong in sampling time, difficult to sample and poor in effect are solved; medical staff can conveniently complete biopsy sampling on the digestive tract of a patient in a short time; the biopsy sampling efficiency is improved; and the doctor-seeing experience degree of the patient is improved.

The invention discloses a hydraulic chain saw of a deep sea manned submersible vehicle. The hydraulic chain saw mainly comprises a sealing shell, a hydraulic motor, an upper baffle, a lower baffle, connecting keys, a saw plate, a cutting chain and an impingement plate. The hydraulic motor is fixed in the sealing shell through a flange, and after being clamped, the upper baffle and the lower baffle are fixed to the front end of the sealing shell. Sliding grooves are formed in the corresponding positions of the upper baffle and the saw plate. The clamping keys are provided with transverse keys and springs. The connecting keys penetrate the sliding grooves of the upper baffle and the saw plate to fix the saw plate to the position between the upper baffle and the lower baffle, and clearance fit connection is achieved. An output shaft of the hydraulic motor is connected with a spline shaft through a coupler, and the spline shaft penetrates a front end cover of the sealing shell and the lower baffle. A chain wheel is fixed to the front end of the spline shaft, and the cutting chain is wound on the chain wheel and the saw plate. The impingement plate is arc and is hinged to the side face of the lower baffle through a connecting rod. The hydraulic chain saw is loaded in a submersible vehicle sampling basket. The hydraulic chain saw is easy to operate, convenient to maintain, safe and reliable.

The invention discloses a sampling method of a sample for wire rod non-metallic inclusion inspection, and belongs to the field of wire rod non-metallic inclusion inspection methods. According to the invention, the problems of low wire rod inspection efficiency and high wire rod inspection cost caused by a sampling method for wire rod inspection in the prior art are solved. The sampling method provided by the invention comprises the following steps: sampling a material section, designing a metal base for placing a sample section, and processing, grinding, embedding, manually grinding, cleaning and drying the sample section. By means of the sampling method of the sample for wire rod non-metallic inclusion inspection, the sampling time of the wire rod for inspection can be effectively prolonged, and compared with traditional wire cutting, the sampling time is shortened, the wire rod testing efficiency is improved, and the wire rod sampling cost is reduced.

The invention provides a detection device and method used for the rut resistance performance of an entity pavement. The method comprises the following steps: firstly, drilling two core sample test pieces of a cylindrical structure through a core boring sampler, and respectively cutting and trimming two core samples into two sections of test pieces of the same thickness according to the shape and the size of a test mode installation hole, wherein a shape spliced by the two test pieces is the same with the structure of the test mode installation hole; then, according to the thickness of the above cut and trimmed core sample test piece, selecting a blockage plate, putting the two sections of test pieces into a test mode, and installing the test mode on a test piece table to be tested. The method puts forward a reasonable rut test method capable of overcoming the difficulty in plate-type test piece sampling, the core sample is obtained through a core drilling sampling way, the detection device and method can be used for detecting the rut resistance performance of the entity pavement, indoor design and field detection can be organically combined, and therefore, the detection of the rut resistance performance of the entity pavement cannot be ignored. Compared with a plate-type rut test method, the method is easy in sampling and convenient in operation.

The invention relates to a primer and a test kit for detecting serum exosome CTD-2376I4-1 and application of the primer in diagnosis and treatment of gastric cancer with liver metastasis. The test kitcomprises an RNA extraction reagent of a serum lncRNA sample, the primer, a genome-free DNA reaction system, a reverse transcription reaction system and a qPCR operation reaction system. The invention discloses an expression condition of lncRNA in serum exosomes of patients with gastric cancer and normal people, and CTD-2376I4-1 is detected by using fluorescent quantitative PCR (Polymerase ChainReaction). The serum exosome CTD-2376I4-1 can be used for diagnosing the early gastric cancer with liver metastasis, judging disease progression and prognosis conditions, and evaluating the treatmenteffect of the gastric cancer with liver metastasis.

The invention relates to a real-time coal density measuring system. The system comprises a weighing unit, a water supplementing unit, a sampler and a slagging off unit, wherein the weighing unit comprises a main weighing tank, an overflowing weighing tank, a main weighing sensor and an overflowing weighing sensor; the upper part of the main weighing tank communicates with the overflowing weighingtank; the main weighing sensor and the overflowing weighing sensor are correspondingly arranged at the lower parts of the main weighing tank and the overflowing weighing tank; the water supplementingunit and the sampler are arranged beside the main weighing tank and are correspondingly used for adding water and a coal sample to the main weighing tank; and the slagging off unit communicates with the bottom part of the main weighing tank and is used for draining the coal sample and water in the main weighing tank. The real-time coal density measuring system has the advantages of being real-timeto measure, convenient to measure, low in cost, and high in measuring accuracy. The invention also relates to a real-time coal density measuring method.

The invention relates to primers and a kit for detecting serum exosome RNF144A-AS1 and application of the primer and the kit in diagnosis and treatment of liver metastasis of gastric cancer. The kit comprises an RNA extraction reagent of a serum lncRNA sample, a primer, a genome-removed DNA reaction system, a reverse transcription reaction system and a qPCR operation reaction system. The inventiondiscloses an expression condition of lncRNA in serum exosomes of gastric cancer patients and normal people, and RNF144A-AS1 is detected by using fluorescent quantitative PCR. The serum exosome RNF144A-AS1 can be used for early diagnosis of liver metastasis of gastric cancer, judging disease progression and prognosis conditions and evaluating the treatment effect of liver metastasis of gastric cancer.

The invention discloses a device and a method for sampling saturated wet flue gas condensation liquid after wet desulfurization. The sampling device comprises a flue, a cyclone separator, a condensation tank, a secondary air duct, an emptying pipe and a discharging pipe; the front end of the cyclone separator is connected with the flue through a connecting pipe; the front end of the secondary airduct is located in the cyclone separator, and the rear end of the secondary air duct extends into the condensation tank; the front end of the emptying pipe is connected with the secondary air duct, and the rear end of the emptying pipe extends out of the condensation tank; and the discharging pipe is connected with the secondary air duct through a sampling switch valve. The sampling method comprises the steps that flue gas enters the cyclone separator through the connecting pipe; the cyclone separator carries out cyclone treatment on the flue gas to remove liquid drops; and the flue gas entersthe condensation tank through the secondary air duct, the condensation tank condenses the flue gas and separates out the condensation liquid, and the condensation liquid is sampled through the discharging pipe. The problem that the saturated wet flue gas condensation liquid is difficult to sample is solved; the sampling process is simple and easy to operate; the device does not comprises any electric driving equipment, so that energy is saved; and the mixed liquid drops in the flue gas are removed before sampling, so that a more accurate sample solution is obtained.

The invention relates to a combined multi-connected sample preparation instrument of a remolded soil cutting ring sample and a sample preparation method. The combined multi-connected sample preparation instrument comprises a sample pressing device and a pressurizing device, and the sample pressing device comprises a base, a cutting ring, an extension cylinder, a sample pressing piston and a combined body. A sampling groove, an exhaust hole and other parts are arranged on the base. During use, a permeable stone is placed at the upper part of the base, so that gas contained in a loose soil sample can be effectively discharged. The extension cylinder comprises an upper hoop cylinder and a lower positioning ring, the inner diameter of the hoop cylinder is the same as that of the cutting ring, the inner diameter of the positioning ring is matched with the outer diameter of the cutting ring, and the extension cylinder is matched with the cutting ring for use, so that disturbance to a sample can be effectively reduced; the combined body is formed by combining the base and the sample pressing piston, simultaneous preparation of a plurality of samples can be achieved, and the sample preparation efficiency is improved. According to the invention, the defects of non-uniform remolded soil sample preparation, difficulty in demolding and sampling, sample rebound, incapability of performing subsequent test operation and the like at present are overcome, and a plurality of standard homogeneous cutting ring samples suitable for various indoor soil tests can be accurately, simply and quickly prepared at the same time.

The invention relates to primers and a kit for detecting peripheral blood exosome circ-PPCDC and application of the primer and the kit. The kit comprises an RNA extraction reagent of a peripheral blood exosome sample, primers, a genome-removed DNA reaction system, a reverse transcription reaction system and a qPCR operation reaction system. The invention discloses an expression condition of the circ-PPCDC in peripheral blood exosomes of a patient with gastric cancer and a normal person, and the circ-PPCDC is detected by using fluorescent quantitative PCR. The peripheral blood exosome circ-PPCDC can be used for early diagnosis of gastric cancer with liver metastasis, judging disease progression and prognosis conditions and evaluating the treatment effect of gastric cancer with liver metastasis.

The invention relates to a small detachable soil column simulation device. The small detachable soil column simulation device is characterized by comprising a liftable supporting table, a soil column bottom unit, a plurality of combination column body units sequentially connected in series from top to bottom, a detachable screen net clamped and fixed to the top inside the soil column bottom unit, an infrared lamp located above the topmost combination column body unit, fixedly arranged on the top of the liftable supporting table and used for simulating the evaporation process, a liquid adding device fixedly arranged on the top of the liftable supporting table and used for simulating the water adding process, and a jet device arranged above the topmost combination column body unit in a hanging mode, wherein the two ends of each soil column body unit are open, the bottom of the combination column body unit located at the bottom is detachably connected to the top of the soil column bottom unit, the detachable screen net can prevent direct mixing between soil and silica sand, and a liquid outlet of the liquid adding device is connected with the jet device through a pipeline. The small detachable soil column simulation device can be widely applied to a soil column simulation test.

The invention relates to a frozen-blockage-preventing oil well sampling device for oilfields. The frozen-blockage-preventing oil well sampling device for oilfields comprises an oil tubing and a sampling port, wherein the sampling port is connected on the lower portion of the oil tubing in a threaded manner. The frozen-blockage-preventing oil well sampling device for oilfields is provided with an adjusting rod, a screw nut and a sealing mechanism, wherein the screw nut is inserted into and welded at a position, corresponding to the sampling port, of the upper portion of the oil tubing; the sealing mechanism comprises a sealing gland and a sealing sleeve welded around the screw nut; the adjusting rod comprises a sealing head, a screw and a handle, the handle is mounted on the upper portion of the adjusting rod, the screw is positioned in the middle of the adjusting rod, and the lower portion of the adjusting rod is connected with the sealing head through a connecting piece. The adjusting rod is inserted into the sealing mechanism and the screw nut, the screw is in screw thread fit with the screw nut, and the sealing head corresponds to the sampling port. The frozen-blockage-preventing oil well sampling device for oilfields has the advantages that producing fluid passes through the periphery of the sampling port continuously, oil samples can be taken out rapidly anytime, the problem about difficulty in sampling in cold seasons is solved, and simplicity and convenience in operation are achieved, so that oil transportation, sampling analysis and oil production are facilitated.

The invention relates to a primer for detecting peripheral blood exosome circ-LRP8, a kit, a detection method and an application thereof. The kit comprises a peripheral blood exosome RNA extraction reagent, the primer, a genome-removed DNA reaction system, a reverse transcription reaction system and a qPCR operation reaction system. The invention discloses an expression condition of circ-LRP8 in peripheral blood exosomes of gastric cancer patients and normal people, and the circ-LRP8 in the peripheral blood exosomes is detected by using fluorescent quantitative PCR. The circ-LRP8 can be used for early diagnosis of liver metastasis of gastric cancer, judging disease progression and prognosis conditions and evaluating the treatment effect of liver metastasis of gastric cancer.

The invention discloses a grain moisture content online detection device of a combine harvester and a sampling mechanism. The detection device comprises: a sensor unit, a polar plate capacitor, a frequency detection circuit and an MCU processor, the polar plate capacitor is used for accommodating grains to be detected; the polar plate capacitor is connected with the signal input end of the frequency detection circuit; and the sensor unit comprises a temperature sensor and a grain compactness sensor and is used for detecting the real-time temperature and the grain compactness of grains to be detected contained in the polar plate capacitor, and the frequency output of the frequency detection circuit and the signal output of the sensor unit are connected with the corresponding signal input ends of the MCU processor. The device can quickly and economically complete the detection of the grain moisture content, and meanwhile, the detection precision is also greatly improved compared with a traditional capacitance detection structure.

The invention relates to a primer, reagent kit and detection method for detecting a serum exosome RP11-439M11-1, and an application of the primer or the reagent kit to diagnosis and treatment of gastric cancer liver metastasis. The reagent kit comprises a RNA extraction reagent of a serum lncRNA sample, a primer, a genomic DNA removed reaction system, a RT reaction system, and a qPCR operation reaction system. The invention discloses the expression situation of lncRNA to gastric cancer patients and normal human serum exosomes, and fluorescent quantitation PCR is used for detecting the RP11-439M11-1. The serum exosome RP11-439M11-1 can be used for early diagnosis of gastric cancer liver metastasis, judging the disease progress and the prognosis situation, and can be used for evaluating thetreatment effect on the gastric cancer liver metastasis.

The invention relates to detection primers and a detection kit for circ-KCNQ1 in serum exosome and application of the detection primers and the detection kit. The detection kit comprises an RNA extraction reagent of a serum exosome sample, primers, a genome-removed DNA reaction system, a reverse transcription reaction system and a qPCR operation reaction system. The invention discloses an expression condition of the exosome circ-KCNQ1 in serum exosomes of gastric cancer patients and normal people, and the circ-KCNQ1 is detected by using fluorescent quantitative PCR. The serum exosome circ-KCNQ1 can be used for early diagnosis of gastric cancer with liver metastasis, judging disease progression and prognosis conditions and evaluating the treatment effect of gastric cancer with liver metastasis.